Across
- 2. Contamination of the environment with gases, plastic bottles, garbage etc
- 4. Planting of trees on land where a forest was cut down
- 6. A place where animals are protected and people come to see these animals, they are also encouraged to breed
- 8. Felling of trees in large numbers in a forest
- 9. A gas that is released from all plants and trees
- 10. Planting of trees on barren land to reduce soil erosion
Down
- 1. A gas which is needed by plants and trees to survive
- 3. A place where birds are encouraged to breed
- 5. A perennial plant with an elongated stem, or trunk, supporting branches and leaves.
- 7. Many people going in the same car to reduce pollution